A bakery is creating a round cake with three different levels as shown below.   The diameters of the three cakes are 10 in, 8 in, and 6 in. The cakes are stacked and centered on top of each other with the largest cake on the bottom and the smallest cake on top. In order to plan the decorations for the cake, the bakery needs to determine the total exposed area available for decoration on the top faces of the three cakes (the sides of each cake will not be decorated). What is the total exposed area, in square inches, of the top faces of the three cakes?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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A bakery is creating a round cake with three different levels as shown below.

 

The diameters of the three cakes are 10 in, 8 in, and 6 in. The cakes are stacked and centered on top of each other with the largest cake on the bottom and the smallest cake on top. In order to plan the decorations for the cake, the bakery needs to determine the total exposed area available for decoration on the top faces of the three cakes (the sides of each cake will not be decorated). What is the total exposed area, in square inches, of the top faces of the three cakes?

 
 
A

25π25π in2

 
 
B

50π50π in2

 
 
C

100π100π in2

 
 
D

200π200π in2

**Title: Calculating the Exposed Surface Area of a Tiered Cake**

**Introduction:**
A bakery is creating a round, tiered cake with three different levels. The diagram illustrates the cake's structure with the following diameters:
- Bottom tier: 10 inches
- Middle tier: 8 inches
- Top tier: 6 inches

**Problem:**
The diameters of the three cakes are 10 inches, 8 inches, and 6 inches, respectively. These cakes are stacked and centered on top of each other, with the largest cake at the bottom and the smallest cake on top. The bakery needs to determine the total exposed area available for decoration on the top faces of the three cakes. The sides of each cake will not be decorated. What is the total exposed area, in square inches, of the top faces of the three cakes?

**Choices:**
- A: \(25\pi \text{ in}^2\)
- B: \(50\pi \text{ in}^2\)
- C: \(100\pi \text{ in}^2\)
- D: \(200\pi \text{ in}^2\)
Transcribed Image Text:**Title: Calculating the Exposed Surface Area of a Tiered Cake** **Introduction:** A bakery is creating a round, tiered cake with three different levels. The diagram illustrates the cake's structure with the following diameters: - Bottom tier: 10 inches - Middle tier: 8 inches - Top tier: 6 inches **Problem:** The diameters of the three cakes are 10 inches, 8 inches, and 6 inches, respectively. These cakes are stacked and centered on top of each other, with the largest cake at the bottom and the smallest cake on top. The bakery needs to determine the total exposed area available for decoration on the top faces of the three cakes. The sides of each cake will not be decorated. What is the total exposed area, in square inches, of the top faces of the three cakes? **Choices:** - A: \(25\pi \text{ in}^2\) - B: \(50\pi \text{ in}^2\) - C: \(100\pi \text{ in}^2\) - D: \(200\pi \text{ in}^2\)
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